Hi. I need help in building a project. This involves measuring the density of objects using the Archimedes law. I need a high accuracy load cell.
0.001 or 0.005 grams accuracy
Also, can Arduino help this project run?
The sample of this device is in the link below
https://www.amazon.com/CGOLDENWALL-Electronic-Machine-Gold-Analyzer-K-Analyzer-Precious/dp/B0721MQTLY
Look for one that has an RS232 interface, like this one: Laboratory PCE-LSM Series <-- it has a density add-on kit
You will need something like the MAX232 chip to interface the Arduino with the scale.
Start with a scale that has some kind of digital output. Finding one that can do 1-5 mg resolution should be easy, but you have to take care with the installation of such sensitive scales. They're typically placed on special tables, with a heavy stone that in turn is placed on rubber patches to dampen vibrations.